Patrol Shudder
Submitted: Friday, Jan 09, 2004 at 23:04
ThreadID:
9625
Views:
2579
Replies:
5
FollowUps:
2
This Thread has been Archived
Jimmy
A Mechanic has told me the shudder I feel when moving off in first or second gear is due to the LSD working incorrectly. The cure could be as simple as changing the diff oil ( I have only had it a week ) or it may need a new diff.
What do you reckon the chances are that new oil will fix it and what would a new/rebuilt diff cost.. Also how much damage may already have been done if any.
What would you look for in the old oil to be able to tell.
A, That damage has occurred or
B, whether water or some other stuff has got in there.
The shudder only occurs when moving off in anything but a dead straight line and is worse the greater the turn.
Its a 1988 GQ LWB
cheers Jim
Reply By: SupaMav - Saturday, Jan 10, 2004 at 08:23
Saturday, Jan 10, 2004 at 08:23
Its easy to tell if water is in the diff oil . . . it looks like caramel sauce and has roughly the same consistency. Also, if you drain the oil and there is any solid matter in what comes out, I guess that would not be a good
sign.
I reckon you should drain it and replace the oil with some good stuff designed for LSDs. If it still doesn't help, get a diff
shop to pull it down and sort it. These are pretty tough diffs, I had the rear LSD in my previous MK lapped and the preload wound back up and worked a treat. From memory the drive in/drive out damage was about $500 tho!
AnswerID:
42443
Reply By: Mick - Saturday, Jan 10, 2004 at 11:40
Saturday, Jan 10, 2004 at 11:40
Nissans are renown for this diff noise if the oil has been replaced by aftermarket type oil, not designed for that type of LSD.
Look in the manuel and buy what the book says, or get some genuine lube, and all your grindy shudders will go away.
The noise is from the wrong additives in the oil causing the clutch packs in the LSD to slip with a jerking motion.
It wont hurt the diff running for short periods, but i would change the oil quickly, before the clutch packs wear out.
AnswerID:
42466